首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   177篇
  免费   0篇
  177篇
  2024年   2篇
  2021年   1篇
  2020年   1篇
  2019年   6篇
  2018年   4篇
  2017年   2篇
  2016年   4篇
  2015年   5篇
  2014年   3篇
  2013年   36篇
  2012年   7篇
  2011年   7篇
  2010年   10篇
  2009年   3篇
  2008年   2篇
  2007年   3篇
  2006年   6篇
  2005年   3篇
  2004年   2篇
  2003年   5篇
  2002年   5篇
  2001年   1篇
  2000年   2篇
  1999年   3篇
  1998年   1篇
  1997年   2篇
  1996年   2篇
  1995年   4篇
  1994年   2篇
  1993年   1篇
  1992年   2篇
  1991年   3篇
  1990年   4篇
  1989年   5篇
  1988年   5篇
  1987年   4篇
  1986年   7篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1975年   2篇
  1974年   1篇
  1973年   1篇
  1971年   1篇
  1958年   1篇
  1957年   2篇
  1950年   1篇
排序方式: 共有177条查询结果,搜索用时 0 毫秒
101.
102.
Roc de Marsal has yielded numerous remains of Mousterian occupations, including lithics, fauna and combustion features. It was made famous by the discovery of the skeleton of a Neanderthal child. Given the need to date the sequence, TL and OSL were applied on heated flints and quartz, and OSL on unheated quartz. Chronological results combined with palaeoenvironmental data – faunal remains and micromorphological features in the sediments from the cave, pollen proxies and faunal remains from the region – allowed us to place climate variations in southwest France on a numerical time scale. Denticulate Mousterian occupations were dated to the middle of MIS 4 (65–70 ka) and Quina layers either to the very end of MIS 4 or to MIS 3. Interestingly, a faunal pattern showing a mix of red deer, roe deer and reindeer was found to have occurred during MIS 4, which was shown to be consistent with data from other similar sites in southwest France.  相似文献   
103.
    
The article is a critical review of the literature investigating the impact suburbanization has had since the mid-20th century on the downtowns of Canadian mid-size cities and the strategies deployed to revitalize these districts. It demonstrates that large city downtowns are more likely than their mid-size city counterparts to enjoy conditions favourable to their success, hence the need to devise revitalization efforts tailored to the reality of mid-size city downtowns. The article identifies revitalization strategies adopted over the last decades, which mostly failed to reverse the decline affecting these downtowns. It then concentrates on the present, and likely enduring, revitalization model, which emphasizes hospitality, recreation, culture, services, and walkability. The article refines the understanding of the differences between mid-size and large city downtowns by concentrating on their specific dynamics and explores future revitalization options for mid-size city downtowns. It discusses the present and likely enduring absence of alternatives to the present revitalization model and highlights its equity downsides as it challenges the downtown low-income resident living environment.  相似文献   
104.
105.
106.
Abstract. This essay contends that behaviour can only be understood within an evolutionary framework that gives equal weight to genes and environment. Our cultural environment itself evolved, in part through natural selection of genes and in part through other mechanisms. Racism, however, involves association of genetically caused differences in physical appearance with characteristics to which they are wholly unrelated. Yet this association has a biological cause: fitness maximisation through nepotism. This association, therefore, has an effect upon the life chances and reproductive success of genetically different groups and, therefore, upon the process of human evolution.  相似文献   
107.
108.
109.
110.
Abstract. Are nationalism and international economic integration irreconcilable? This paper explores the theoretical connections between these two phenomena and develops a framework to assess the implications of international economic integration for nationalist movements in the developed West. We focus upon the structural context of nationalism in democratic societies, emphasising the impact of changes in the international political economy and the influence of domestic institutions. Although the demand for secession may not stem from economic calculations, the expected costs and benefits of independence are constraints to nationalist mobilisation and are conditioned by the structure of the international political economy. We identify three ideal types of international structures and discuss how the strategies and prospects of nationalist movements are shaped within each of them. We find that a structure of ‘institutionalised interdependence’ is most conducive to nationalist mobilisation in a liberal democratic context, but the impact of economic integration depends largely upon conditions defined by domestic institutional structures.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号